On the 8th October I parked in Falmouth on the National Maritime Museum pay and display car park. I obtained and displayed a valid ticket for 2 hours parking.
I returned to my car some 20 minutes over the 2 hour period to find a ticket on my windscreen advising me of a £80.00 penalty charge.

I wrote on the 10th October to the ‘management’ company responsible for the operation of the car park and issuing the penalty notice, enclosing a cheque for £10.00 ‘in full and final reasonable settlement for my minor breach of contract in your car park’.

Yesterday, 27th October I received a letter dated 25th October stating :

"Your ticket, was purchased on 8th October 2011, expired at 14.43and after allowing a grace period of 20 minutes you were ticketed at 15.03. I am holding your cheque for £10.00 on my files as a part payment of the £80.00 penalty charge. The balance of £70.00 is now due and I would appreciate your payment for this amount by return.
Please note that if this is not received within the next 7 days the amount payable will increase to £100.00 as detailed on the front of the parking charge ticket. A***** S**** Services will pursue all outstanding parking charges to conclusion and if necessary with the help of the County Courts".

Should I reply stating the Freedom from Harassment Act 2007 or just ignore them for the time being?
I should point out that there were numerous empty parking spaces available.

Regards,
Ian Vanes.
Worcestershire.